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Blank page setting Started by Vasu Ram at 05-06-2008 15:41. Topic has 6 replies. LEAD Support Fo... » Developer » Scanning/Captur... » Blank page setting

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05-06-2008, 15:41 Vasu Ram Joined on 04-15-2008 Posts 6 Blank page setting Hello, I understand how the actual blank page detection process works( using raster image apis) but how can I store the blank page detection preference within the twain session ?. I want to build a settings screen where user will have the option of turning on/off the blank page detection preference. If the preference is on, every image will then pass through a blank page test.If not, even blank images will be retrieved/displayed. Thanks Vasu    Report

05-07-2008, 8:08 Qasem Lubani Joined on 08-13-2006 Posts 1,135 Re: Blank page setting Vasu, Do you mean you want to store an additional flag for page detection into the Twain template saved by LEADTOOLS Twain template functions? If yes, the template save and load functions only save the Twain driver's capability values, and do not allow adding other data there, such as your own flag that determines whether to turn on or off your own blank page detection code.   If you want to save such settings, you must use your own file to store them. Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

05-07-2008, 10:53 Vasu Ram Joined on 04-15-2008 Posts 6 Re: Blank page setting Thanks. But, is there a twain capability for blank page detection preference - like there are ones available for duplex setting, rotation angle etc ?.    Report

05-08-2008, 10:01 Qasem Lubani Joined on 08-13-2006 Posts 1,135 Re: Blank page setting You can do that by setting the ICAP_AUTODISCARDBLANKPAGES. However, this depends on whether the scanner driver supports the capability or not. More information on the capability is available in the Twain Standard document. Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

05-12-2008, 11:47 Vasu Ram Joined on 04-15-2008 Posts 6 Re: Blank page setting Doesn't LeadTools provide a blank page detection preference ? My code is in C#. Can you point me to some sample C# code that interfaces with ICAP capabilties ? Thanks.    Report

05-12-2008, 13:38 Vasu Ram Joined on 04-15-2008 Posts 6 Re: Blank page setting It further seems that the ICAP_AUTODISCARDBLANKPAGES setting is not listed as a TwainCapabilityType in Leadtools.    Report

05-13-2008, 10:57 Qasem Lubani Joined on 08-13-2006 Posts 1,135 Re: Blank page setting This capability was removed from the Twain standard header file in version 1.9. However, if your driver supports it, it will probably be listed as a custom capability with number (1134)hex = (4404)decimal Qasem Al-Lubani LEAD Technical Support www.leadtools.com    Report

LEAD Support Fo... » Developer » Scanning/Captur... » Blank page setting

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